An airfoil (164) includes an airfoil section (165) extending between a leading edge (LE) and a trailing edge (TE) in a chordwise direction (X) and extending between a tip portion (170) and a root section (168) in a spanwise direction (R). The airfoil section (165) defines pressure and suction sides (PS, SS) separated in a thickness direction (T), and includes a sheath (176) having first and second sheath portions (178, 180) extending along an airfoil body (172) of the airfoil section (165). The first sheath portion (178) includes a first interface portion (178B), and the second sheath portion (180) includes a second interface portion (180B) that cooperates with the first interface portion (178B) to establish a joint (182) having a circuitous profile along an edge (172C) of the airfoil body (172).